Ko te waeine te tūāpapa o tētahi pūnaha ine. Ka whakatairitea te rahi o te mea e inea ana ki te rahi o te waeine. Ko te mita te waeine matua mō te roa. Arā ētahi waeine aro kē (pērā i te kōnui). Ko ngā waeine aro whānui e tino whakamahia ana puta noa i te ao, ko ngā waeine ngahuru.
Units of measurement form the basis for a system of measurement. The size of the thing being measured is compared with the size of the unit. The metre is the main unit for measuring length. Some units can be non-standard, such as thumb width. The standard units of measurement used throughout the world are metric.